Recent content by Gorz

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    AC Circuit Analysis - Capacitor

    Solved, please close.
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    AC Circuit Analysis - Capacitor

    Homework Statement Calculate the magnitude and sign of i12 which will flow through a capacitor of 10microfarads when: v12 = +50V, and decreasing at a rate of 104V/s Homework Equations Vab=Q/C The Attempt at a Solution No idea where to even begin with this question I am affraid. :(
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    Is My Method for Calculating Pressure Difference in a Venturi Meter Correct?

    No one able to help with this? My exam is tommorow morning and I wouldn't mind some closure on my quiery.
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    Is My Method for Calculating Pressure Difference in a Venturi Meter Correct?

    Homework Statement Water flows through a venturi meter, with an inlet diameter of 25cm and a throat diameter of 15cm. The pressure difference is measured using a manometer, which displaces the mercury by 12mm on the throat side. Homework Equations Bernoulli's Mass continuity P=rho.g.h...
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    Thermal Properties: Pressure, Volume, Temp question

    Thats the Adiabatic process. Calculate the mass of air in the cylinder from pv=mRT Constants for air Cp=1005J/kgK, Cv=718J/kgK R=287J/kgK, calculate gamma from these. Reaarange the equation for an adiabatic process to find T
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    What Is the Speed and Average Acceleration of the Minute Hand on a Clock?

    What would happen if you cut a cake into 12 pieces and remove 2 pieces from the cake? How many degrees would the 2 pieces of cake be worth. 360/12 = 30, 30*2=60 Or in Radians, Pi = 180, so 2pi/12 *2 = pi/3
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    What Is the Speed and Average Acceleration of the Minute Hand on a Clock?

    I would suggest having a browse of this. http://en.wikipedia.org/wiki/Radian_measure
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    What Is the Speed and Average Acceleration of the Minute Hand on a Clock?

    I calculated the average angular velocity to be 1.745x10^-3 rad/s Average acceleration will be 0, assuming that the average angular velocity is constant. Is this what you are after? there are 12 points on a clock face, so (2pi/12)*2 will give you the angle in radians between 12 and 2. Its...
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    What Formula Applies to a Boxer's Punch?

    Force is measured in Newtons and is a vector quantity(has magnitude & direction) P is impulse and is measured in kgm/s, so is a measure of mass*velocity per second Kinetic Energy is measure in Joules yes. Im still lost as to what youre trying to find out.
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    What Formula Applies to a Boxer's Punch?

    Depends on what you are trying to find. You will more than likely have to use a combination of these.
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    How to draw a freebody diagram of a non ideal pulley

    Homework Statement Just a quick question. I am not entirely sure how to draw an FBD of a pulley with Inertia. Im doing a problem solving exercise for the atwood machine with two masses over a non ideal pulley and need to sketch its FBD. Thanks
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    Simple Circuit Analysis - 2 Questions

    I assume you are talking about the 2nd question yes?
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    Simple Circuit Analysis - 2 Questions

    I get an equivalent resistance of 2ohms. Working from the Resistor closest to the Op-amp. 2+2 = 4 Ohms in series, 1/4 +1/4 = 0.5 = 2ohms. 2+2 = 4 Ohms in series, 1/4 +1/4 = 0.5 = 2ohms. So the total resistance in the circuit is 20ohm. 20v source, therefore the input is 2v. Where am...
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    Simple Circuit Analysis - 2 Questions

    Sunday Afternoon Bump.
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    Calculating the Maximum Compression of a Spring

    What was your answer for x, I got 0.1236m.